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In both cases the added Fe(II) persisted significantly longer than its expected oxidation time indicating a significant Fe reduction process at work. During EIFeX diel studies showed a strong photochemically induced cycle in Fe(II) production in sunlit surface waters. Our results suggest that the photochemical cycling of iron may also be important in unfertilized waters of the Southern Ocean.<\/jats:p>","DOI":"10.1029\/2008gl035063","type":"journal-article","created":{"date-parts":[[2008,10,12]],"date-time":"2008-10-12T06:14:40Z","timestamp":1223792080000},"source":"Crossref","is-referenced-by-count":36,"title":["Regeneration of Fe(II) during EIFeX and SOFeX"],"prefix":"10.1029","volume":"35","author":[{"given":"P. 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